Leandro Rizi
type: MusicGroup
popularity: 2
followers: 190
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x870fb03f6bf2909cbacae85dc7353eeec8a1ed4de20567dc883e5470e898cf32
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10cd426d-db2e-4b7d-be75-365c2354c1ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10cd426d-db2e-4b7d-be75-365c2354c1ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/10cd426d-db2e-4b7d-be75-365c2354c1ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x870fb03f6bf2909cbacae85dc7353eeec8a1ed4de20567dc883e5470e898cf32","name":"Leandro Rizi","registered_at":"2026-06-15T19:38:45Z","symbol":"NIM0811056","token_address":"0x70a52fe4510dcaa03ee04de73431092487d5a330","type":"artist","uuid":"10cd426d-db2e-4b7d-be75-365c2354c1ab"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870fb03f6bf2909cbacae85dc7353eeec8a1ed4de20567dc883e5470e898cf32. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10cd426d-db2e-4b7d-be75-365c2354c1ab.json and https://artists.proofprofile.net/proofs/artist/10cd426d-db2e-4b7d-be75-365c2354c1ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x870fb03f6bf2909cbacae85dc7353eeec8a1ed4de20567dc883e5470e898cf32","name":"Leandro Rizi","registered_at":"2026-06-15T19:38:45Z","symbol":"NIM0811056","token_address":"0x70a52fe4510dcaa03ee04de73431092487d5a330","type":"artist","uuid":"10cd426d-db2e-4b7d-be75-365c2354c1ab"}
album: Por Que Não Hoje?
  type: MusicAlbum
  date published: 2022-06-19
album: Ele Me Amou
  type: MusicAlbum
  date published: 2022-06-19
album: Meu Amado
  type: MusicAlbum
  date published: 2022-08-21
album: Fluirão
  type: MusicAlbum
  date published: 2024-03-07